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Old   April 1, 2000, 11:16
Default Galilean Invariant
Valdemir G. Ferreira
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Hi friends,

In the literature, I have seen the following term: ``non-Galilean invariant''. It appeared in a paper on K-Epsilon turbulence model that uses y in the damping function instead of y+. Please, what means Galilean Invariance?

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Old   April 1, 2000, 18:03
Default Re: Galilean Invariant
Jonas Larsson
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Galilean Invariance means that the model must not be affected by a Galilean transformation. A Galilean transformation is a change of reference frame from one coordinate system to another moving with a constant velocity relative to the original. Everything in classical physics is Galilean invariant so all good models should also be Galilean invariant in order to be correct.
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